Test tube rack



FIG. 1 is a perspective view of a test tube rack showing my new design;

FIG. 2 is a perspective view of the top portion of the test tube rack seen in FIG. 1 shown separately for clarity of illustration;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a front or rear view of FIG. 2;

FIG. 5 is a top plan view of FIG. 2;

FIG. 6 is a bottom plan view of FIG. 2;

FIG. 7 is a perspective view of the center portion of the test tube rack seen in FIG. 1 shown separately for clarity of illustration;

FIG. 8 is a front or rear view of FIG. 7;

FIG. 9 is a side view of FIG. 7;

FIG. 10 is a top plan view of FIG. 7;

FIG. 11 is a bottom plan view of FIG. 7;

FIG. 12 is a perspective view of the bottom portion of the test tube rack seen in FIG. 1 shown separately for clarity of illustration;

FIG. 13 is a side view of FIG. 12;

FIG. 14 is a front or rear view of FIG. 12;

FIG. 15 is a top plan view of FIG. 12;

FIG. 16 is a bottom plan view of FIG. 12;

FIG. 17 is a perspective view of the detachable portion of the top and center portions of the test tube rack seen in FIG. 1 shown separately for clarity of illustration;

FIG. 18 is a front or rear view of FIG. 17;

FIG. 19 is a right side view of FIG. 17;

FIG. 20 is a left side view of FIG. 17;

FIG. 21 is a top plan view of FIG. 17; and,

FIG. 22 is a bottom plan view of FIG. 17.

The broken lines are included for the purpose of illustrating portions of the test tube rack system that forms no part of the claimed design. 

The ornamental design for a test tube rack, as shown and described. 